EP 0349455 B1 19951108 - Method for controlling the presentation of nested overlays.
Title (en)
Method for controlling the presentation of nested overlays.
Title (de)
Verfahren zum Steuern der Anzeige von verschachtelten Auflageschichten.
Title (fr)
Méthode de commande de présentation de couches de recouvrement emboîtées.
Publication
Application
Priority
US 21342788 A 19880630
Abstract (en)
[origin: EP0349455A2] A method is disclosed for controlling the presentation of nested overlays on a display medium. An overlay function resource is provided which includes its own environment specification which is independent of the space and data environment specifications. Mixing attributes are associated with each overlay and are utilized to determine which overlay space and data are to take precedence and be visible when the overlayed spaces are combined and imaged on a display medium. In a preferred mode of the present invention, the foreground and background of each overlay are separately controlled by the mixing attributes which define the mixing rules for the layered presentation of multiple overlays. Additionally, the order of precedence for displaying multiple overlays may be selectively altered or varied to provide multiple displays and to permit an individual overlay to be repetitively utilized.
IPC 1-7
IPC 8 full level
G06F 3/048 (2006.01); G06F 3/14 (2006.01); G06T 11/00 (2006.01); G06T 15/00 (2011.01); G09G 5/14 (2006.01); G09G 5/30 (2006.01)
CPC (source: EP)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0349455 A2 19900103; EP 0349455 A3 19910320; EP 0349455 B1 19951108; BR 8903217 A 19900213; CA 1329282 C 19940503; DE 68924731 D1 19951214; DE 68924731 T2 19960620; JP H0232483 A 19900202; JP H0786821 B2 19950920
DOCDB simple family (application)
EP 89480077 A 19890523; BR 8903217 A 19890629; CA 595249 A 19890330; DE 68924731 T 19890523; JP 12456589 A 19890519